Home / 14,688.87-20,270.70-7,974.51

Finding the Fourth Proportional to 14,688.87, 20,270.70 and 7,974.51

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Solution

The fourth proportional to 14,688.87, 20,270.70 and 7,974.51 is: 11,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.87 : 20,270.70 = 7,974.51 : x
  2. Step 2: Convert to fraction form
    14,688.87/20,270.70 = 7,974.51/x
  3. Step 3: Cross multiply
    14,688.87x = 20,270.70 × 7,974.51
  4. Step 4: Simplify right side
    14,688.87x = 161,648,899.86
  5. Step 5: Solve for x
    x = 161,648,899.86/14,688.87
  6. Step 6: Final answer
    x = 11,004.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.